School desk



.0. F. BEAVER.

' SCHOOL DESK.

APPLICATION FILED JAN-28. 1921.

Patented June 20, 192.2.

2 SHEETS-SHEET I- awwmtoz D. F. BEAVER. SCHOOL DESK.

APPLICATION FILED JAN-28, I921 Patented June 20, 1922.

2 SHEETS-SHEET 2.

fiamzUZ'BEayer UNITED STATEfi DAVID F. BEAVER, 0F COLUMBUS, OI-IIO.

SCHOOL DESK.

Specification of letters Patent.

Patented June 20, 1922.

Application filed January 28, 1921. Serial No. 440,762.

To all whom it may concern:

Be it known that DAVID F. BEAVER, a citizen of the United States, residing at C0- lumbus, in the county of Franklin and State of Ohio, has invented certain new and useful Improvements in School Desks, of which the following is a specification.

This invention relates to improvements in school furniture, and has for its primary object to provide a desk structure wherein an improved mounting is provided between the supporting frame of the deskand the writing board thereof, the said mounting serving to admit of compound adjustments on the part of the writing board in order that the latter may be adapted'to suit the physical requirements of'the pupil'utilizing the desk.

The invention primarily consists in the provision of a desk structure of this nature wherein the frame thereof is provided with a pair of vertically adjustable brackets which include inwardly projecting portions carrying pivotally mounted angularly eX- tending arms, the said arms being further connected with the under part of the writing board and provided intermediately with openings capable of receiving the ends of a transversely extending rod, the latter be= ing mounted for oscillation in arcuate slots provided in the inwardly projecting ends of the vertically adjustable brackets, the ends of said rods being threaded and provided with binding nuts, which are capable of engaging with arcuately slotted brackets carried by the under portion of the writing board, the arrangement of parts being such that the writing board will be capable of being adjusted vertically to assume the desired height, and by being oscillated about the fulcrum existing between the angular arms and the inwardly projecting portions of the vertical brackets, to assume various longitudinal positions of adjustment with respect to the seat structure of the desk, and also by being moved about the pivotal connections between the upper ends of the arms to assume various positions angular to the horizontal.

A further object-of the invention resides in a desk of this nature which will be simple and convenient to adjust, capable of perfectly conforming to the physical requirements of the user, of strong and durable construction, and economical to manufacture and sell; the mounting of the desk being such that the writing board may be retained in its vertical positions of adjustment by one set of clamping means and in its various positions of longitudinaland angular adjustment by a second and independent means.

With these and other objects in view, as Wlll appear as the description proceeds, the invention accordingly consists in the novel features of construction, combinations of elements, and arrangements of parts, hereinafter to be fully described and pointed out in the appended claims.

In the accompanying drawings, forming a part of this specification, and in which similar characters of reference denote like and correspondin parts throughout the several views thereo Figure 1 is a perspective view of the improved desk comprising the present invention, v

Figure 2 is a vertical transverse sectional view taken along-the plane indicated by the line 2'-2 of Figure 1,

Figure 3 is a perspective view of one of the brackets designedtocontrol the vertical adjustment of the desk, and Figure 4 is a detail view disclosing one of the angular. arms, for pivotally mounting the writing board of a desk in conjunction with the vertically'adjustable brackets.

Referring more particularly to the details of the invention, the latter consists of a unitary desk structure 1 of the type adapted for use in school and class rooms and other similar purposes. The desk consists essentially of a frame 2, which consists of a pair of forwardly located transversely spaced vertical posts 3, which have their upper ends united by means of a cross bar 4. One of the posts 3 has connectedtherewith horizontally and longitudinally extending bars *5 which are in turn connected with rearwardly located seat posts 6. A seat or chair structure 7 is built in connection with the mem bers 5 and 6 and also. a slidable book receiving drawer 8 may be built within or under the seat structure, if desired. It will be observed that the bars 5 are only provided on one side of the desk, in order that the pupil may enter or leave the-desk with convenience, The structure 1 includes an adjustable writing board 9 and an improved mounting 10 between the board and the vertical posts 3, which mounting constitutes the gist of the present invention, since by its use the board 9 may be adjusted relative to the seat structure to assume various operative positions which will adapt the desk as a whole to the requirements of each individual pupil. To this end, the upper portions of the posts 3 are provided with vertically adjustable metallic brackets 11, which are provided with vertically disposed elongated slots 12, the latter being adapted to receive the shank ends of'horizontally disposed bolts 13 carried rigidly in horizontal positions by the upper ends of the posts 3. The threaded shankends of these bolts are disposed to project through and beyond the slots 12, and are adapted to receive wing nuts or their equivalents 14. It will be understood that by this construction the said brackets 11 may be adjusted vertically to a very considerable extent, and the adjustment afforded will be ample to satisfy all practical requirements. Preferably, spaced vertically disposed ribs 15 are provided upon the inner face of the brackets 11 and are so situated as to constitute guides for the reception of the upper portions of the posts 3, the said ribs serving to maintain proper re lationship between the brackets and the posts, and to prevent undue lateral movement on the part of the brackets.

In this instance the brackets 11 are formed to include relatively enlarged inwardly projecting portions 16 in which are provided arcuate slots 17. These slots are arranged to receive the opposite ends of a transversely extending rod 18, which is located beneath and in parallel relationship with the writing board 9. By this construction the rod 18 will be mounted to travel within the slots 17. The outer ends of the said rod are received within openings provided in angular arm members 19. These members have their lower ends pivoted as at 20 to the brackets 11 and in such manner that the pivots will be situated at the radii centers of the arcs forming the slots 17 in order that the rod 18 will be permitted to freely travel within said slots when the arm members are oscillated. The upper ends of the arm members are pivoted as at 21 to ears 22 provided in connection with brackets 23 rigidly carried bythe under portions of the board 9, the said brackets 23 being disposed in transversely spaced relationship and depend from the under surface of the writing board so that the centrally situated segmental portions 24 thereof Will lie contiguous to the inwardly projecting portions 16 of the brackets 11. The segmental portions24, in this instance, are provided with arcuate slots 25, whose centers are defined by the pivotal connection 21, the said slots 25 being situated .to receive the outer threaded ends 26 of the rod 18. The ends 26 are adapted to receive binding nuts 27, which are provided with serrated peripheries to facilitate adjustment thereof.

By this construction it will be apparent that the mounting 10 for the writing board will be of such construction that the height of the board with respect to the seat structure, may be varied by vertically adjusting the positions of the brackets 11 upon the posts, 3. Then, in order that the board 9 may be adjusted longitudinally toward or away from the seat structure, the nuts 27 are loosened to permit oscillation of the arm members 19, a feature which permits oscillation of the said arm members in order that the'desired longitudinal adjustment of the writing board will be afforded. Then, if it is desired that the writing board should assume an angle other than the horizontal, the writing board is oscillated about the pivotal connection 21 between the upper ends of the arm members and the brackets 23, until the desired operative positions have been secured. lVhen the required adjustments have been effected, the wing nuts 14 are tightened so as to frictionally bind the brackets 11 in rigid connection with the upper ends of the posts 3, and the longitudinal and inclined adjustments of the writing board can likewise be maintained by tightening the nuts 27 so that the latterwill exert binding pressure between the segmental portions 24. of the brackets '23, the arm members 19 and the brackets 11. It will be appreciated that this pressure may be of such nature as to maintain the writing board fixed and immovable for all practical purposes. Preferably, the arm members 19 are of angular formation in order to afford a maximum longitudinal adjustment of the writing board and likewise to effect an extreme angular adjustment onv the part of said board. In view of the foregoing it is believed that the construction, operation and advantages of the desk comprising the present invention will be readily understood by those versed in the art, and therefore a more detailedexplanationrelative thereto has been accordingly omitted.

What is claimed is:

1. In a school desk and frame structure, a vertically adjustable bracket carried by said frame structure, said bracket being formed to include an inwardly extending arcuate slotted portion, an angle arm member having its lower end pivotally connected with the inwardly extending portion of said bracket, a writing board, a bracket rigidly depending from said writing board and provided with a segmental slot, a pivotal connection between said latter bracket and said arm, a tie member disposed to extend through the slots provided in said brackets and through an opening formed intermediately in said arm member, and a binding nut carried by the outer end of said tie member and operative to maintain said brackets and arm member in their positions of relative adjustment.

2. In a school desk, a frame structure, a vertically adjustable bracket carried by said frame structure, said bracket being formed to include an inwardly extending arcuately slotted portion, an angular arm member having its lower end pivotally connected with the inwardly extending portion of said bracket, a writing board, a bracket having a segmental slot rigidly depending from said board, a pivotal connection between the upper end of said angular arm member and the bracket of said board, a tie member disposed to pass through the slots provided in said brackets and through an opening provided intermediately within said arm member, and a frictional binding device threaded upon the outer end of said tie member and operative to maintain said brackets and arm member in various positions of relative adjustment.

In testimony whereof I affix my signature.

DAVID F. BEAVER. 

